baber/WOPTO huggingface dataset:
Patent GB-1207494-A (GB)
Title: Improvements in or relating to non-contact-making switching circuits
IPC: H03K17/54
Filed: 1967-08-31
Abstract: 1,207,494. Gating circuits; R.F. couplings. NIPPON ELECTRIC CO. Ltd. 31 Aug., 1967 [31 Aug., 1966; 11 May, 1967], No. 39921/67. Headings H3P, H3T and H4A. A gating circuit comprises a cathode follower, emitter follower or like amplifier normally biased at its output circuit to cut-off but rendered conductive by control means connected between the output electrode supply terminal and a connection between the output impedance and the bias supply. In Fig. 6, when terminals 63 and 64 are shorted, the transistor acting as an emitter follower passes signals from terminals 61 to 63. When the short is removed the transistor is biased off by the voltage across a zener diode 601 and the transmission path is interrupted. A zener diode 60 provides a normal operating bias. The diodes may be replaced by resistors (Figs. 2 and 7, not shown) and the transistor by a valve (Fig. 5, not shown). Two circuits may be connected in cascade and controlled by a common switch (Fig. 9, not shown) and two such circuits may be connected in parallel at their inputs to provide a changeover arrangement, the cascaded circuits being separated by networks (I, II, Fig. 8, not shown). A multi-emitter transistor can be used and arranged to connect the base input to a selected emitter (Fig. 10, not shown). In Fig. 4 (not shown) a matrix of the gates connects any of a plurality of aerial terminals (11 to in) to any receiver input (111 to 1m<SP>1</SP>) by operating a switch associated with a corresponding gate (A11-Anm). A prior diode aerial switching matrix is also described (Fig. 3, not shown).
Patent GB-1360042-A (GB)
Title: Variable resistor
IPC: G03B7/083
Filed: 1971-08-26
Abstract: 1360042 Exposure control circuits CANON KK 26 Aug 1971 [27 Aug 1970] 40081/71 Heading G2A [Also in Division H1] A variable resistor device comprising a printed circuit board Af having a plurality of resistors 2 connected to conducting paths 3 through which a resistor is selected by movement of the board Af and a selector 6, each associated with an exposure determining factor such as film sensitivity or object distance, is included in a circuit of a programmed electronic shutter for flash auto-photography. Other exposure determining factors, such as guide number, may be included by further movement of the selector and circuit board. A switch 8 disconnects the resistor and connects a light-receiving element P having a diaphragm A for use in electronic eye photography.
Patent GB-1342151-A (GB)
Title: Method of removing volatiles from an elastomer
IPC: B29C48/76
Filed: 1971-08-26
Abstract: 1342151 Purifying elastomers FIRESTONE TIRE & RUBBER CO 26 Aug 1971 [4 Sept 1970] 40170/71 Headings C3P and C3E Volatile hydrocarbons are continuously removed from elastomers by (1) charging the elastomer into an extruder, (2) mechanically working the elastomer to raise its temperature, (3) mixing an inert gas or water with the elastomer in the extruder, and (4) allowing vapours to flash from the mixture thus formed and to escape through a vented section in the extruder. These steps may be repeated, either in a single extruder or by using a plurality of extruders. Oil and other compounding ingredients may be mixed with the elastomer before or during the process. The elastomers which may be treated include natural rubber, polybutadiene, polyisoprene, butadiene/styrene and isoprene/styrene copolymers, chloroprene rubber, butyl rubber and EPDM.
Patent GB-863528-A (GB)
Title: Improvements in or relating to centrifugal separators
IPC: B04B1/14
Filed: 1959-11-30
Abstract: 863,528. Centrifugal separators. CUCCOLINI, S., [trading as ENOMECCANICA [Firm of]]. Nov. 30, 1959 [Nov. 29, 1958], No. 40619/59. Class 23 In a clarifier having sludge outlets 28 controlled by a member 9 slidable on the bowl 4, the member is held in position closing the outlets by fluid in a chamber 14, and the member is moved to open the outlets by supplying fluid at pressure to a chamber 10. The chamber 14 is filled with oil up to a level 15, and this oil forms an annulus having an inner surface 25 when the bowl is rotated and tends to hold the member in the outlets closed position. Air under pressure is fed to the chamber 10 by ducts 22, 23 in the bowl shaft 2.
Patent GB-1345921-A (GB)
Title: Echo suppressors
IPC: H04Q11/04
Filed: 1971-08-31
Abstract: 1345921 Echo suppressors WESTERN ELECTRIC CO Inc 31 Aug 1971 [2 Sept 1970 4 Sept 1970] 40630/71 Heading H4R Relates to an echo suppressor system of the same type as described in Specification 1,216,352 where the signal levels on the incoming and outgoing lines are detected and compared with their previous levels to determine activity states and echo suppression is enabled if the incoming line is determined to be active and the outgoing line idle. The present invention utilizes speech detectors 2 and 1, connected respectively to the incoming LO and outgoing LE lines each of which samples the line signal level and converts the digital p.c.m. code samples into amplitude codes representing approximated peak signal levels, the amplitude codes being continuously updated on a rising signal level but only being reduced to a lower amplitude code after a decrease has existed for a predetermined number of line samples, the operation of the detectors being described with respect to the state diagram of Fig. 9 (not shown), and block diagram of Fig. 8 (not shown). The output of the incoming signal threshold detector 2 is applied to a second threshold detector 4 in which the amplitude codes are compared with a threshold level, S 0 , corresponding to the minimum level likely to produce echoes, and to a stretched version OLi, of the amplitude code signal, stored in the threshold detector 4, to generate, in accordance with the comparison and in dependence of the time of existence of the comparison results, an odd line status, following the sequence described with respect to the state diagram, Fig. 4B (not shown). The line status is fed to the suppression control logic 12 and also controls the up-dating of the stretched signal level signal OLi which is fed to a comparator 5 for comparison with the signal Si from the threshold detector connected to the outgoing, or even, line LE, to generate a status signal for the even line according to the state diagram, Fig. 4C (not shown). if the odd line is determined as active and the even line determined idle then the suppression logic 12 switches in the echo suppression attenuator 18 into the outgoing line. If the activity states of the two lines are determined both to be active then the suppression logic switches attenuator 18 out of circuit but switches double talk attenuator 8 into circuit to reduce the loop gain of the circuit and reduce the level of echoes. The complete suppression circuitry operates in time division multiplex to a number of channels.
Patent GB-1483614-A (GB)
Title: Manufacture of confectionery
IPC: A23G3/20
Filed: 1975-09-05
Abstract: 1483614 Moulding filled confections BAKER PERKINS HOLDINGS Ltd 5 Sept 1975 [18 Sept 1974] 40741/74 Heading B5A [Also in Division A2] Moulded pieces of confectionery, each comprising a cup containing a centre are made by depositing a pool of liquid confectionery in succession into each of a series of continuously travelling moulds, introducing into the pool from above a plunger to deform the confectionery into a cup and thereafter depositing into the cup, while still in the mould, a centre material. In the embodiment in Fig. 2, a pool 15 of liquid toffee is deposited into a mould 10, a hollow is formed in the toffee shell 16 thus produced by means of a plunger 14, a preformed centre (such as a nut or a cherry) is deposited in the hollow, a second liquid confection is deposited over the preformed centre, and finally a sealing layer of toffee is deposited. The whole, after removal from the mould, may be. coated with chocolate. In the embodiment shown in Fig. 2, moulds 10 are carried upon a chain 11 past a depositor 12 and below a series of shell forming plungers carried by a conveyer 13. The moulds then pass under a second depositor 18 by which a level filling is placed in each shell, through a cooler 20, and under third and fourth depositors by which a soft fill and a shell closing layer are deposited. The moulds are then conveyed to a device 25 by which the formed shells are ejected from the moulds downwardly on to a take-off conveyer 26. The plunger may contain an aperture 17 for cooling and shell release purposes and the ejection may be effected by a blast of air through apertures 27 in the moulds. Alternatively the moulds may be elastic, being supported by blocks 28 during casting and being deformed whilst unsupported by the block to eject the shells.
Patent GB-1002678-A (GB)
Title: Production of ethylene oxide and recovery of nitrogen
IPC: C01B32/50
Filed: 1961-11-15
Abstract: A process for the production of ethylene oxide and recovery of nitrogen comprises feeding ethylene and air to a reaction zone, reacting the ethylene with the oxygen to produce ethylene oxide, withdrawing a gaseous effluent containing ethylene oxide, nitrogen, carbon dioxide and combustible carbonaceous material from the reaction zone, separating ethylene oxide from the gaseous effluent, e.g. by water scrubbing, adding oxygen or combustible carbonaceous material to residual gaseous effluent in an amount sufficient to bring the ratio of oxygen to combustible carbonaceous material to within 20% of the stoichiometric ratio for complete conversion of the oxygen and combustible carbonaceous material to carbon dioxide and water, catalytically reacting the mixture in the vapour phase at a temperature of at least 600 DEG  F. to convert substantially all the combustible carbonaceous material and oxygen to carbon dioxide and water, separating the carbon dioxide and water and recovering the residue which is substantially nitrogen.  The examples include the use of a supported silver catalyst, chlorinated hydrocarbon inhibitor, temperature 150 DEG  to 400 DEG  C.  U.S.A. Specifications 2,693,474, 2,752,362, 2,785,186, 2,777,862, 2,766,861 and 2,814,628 are referred to.ALSO:A process for the production of ethylene oxide and recovery of nitrogen comprises feeding ethylene and air to a reaction zone, reacting the ethylene with the oxygen to produce ethylene oxide, withdrawing a gaseous effluent containing ethylene oxide, nitrogen, carbon dioxide and combustible carbonaceous material from the reaction zone, separating ethylene oxide from the gaseous effluent, adding oxygen or combustible carbonaceous material to residual gaseous effluent in an amount sufficient to bring the ratio of oxygen to combustible carbonaceous material to within 20% of the stoichiometric ratio for complete conversion of the oxygen and combustible carbonaceous material to carbon dioxide and water, catalytically reacting the mixture in the vapour phase at a temperature of at least 600 DEG  F. to convert substantially all the combustible carbonaceous material and oxygen to carbon dioxide and water, separating the carbon dioxide and water and recovering the residue which is substantially nitrogen.  U.S.A. Specifications 2,693,476, 2,752,362, 2,766,861, 2,777,862, 2,785,186 and 2,814,628 are referred to.
Patent GB-1025387-A (GB)
Title: Processing of yarns
IPC: D02G1/02
Filed: 1962-10-30
Abstract: 1,025,387. False twisting yarns. FLUFLON Ltd. Oct. 30, 1962 [Nov. 2, 1961], No. 40902/62. Headings DID and D1F. A method of processing yarn having thermoplastic qualities to produce a port treated torque stretch yarn comprises the steps of continually advancing said yarn at a predetermined speed of travel through a false twister, controlling the tension of said yarn during the twisting and reverse twisting, heating the yarn while it is twisted to a predetermined treatment temperature correlated with the yarn tension, and controlling the heat loss from the yarn subsequent to the heating to prevent cooling of the yarn to ambient temperature as it is reverse twisted, so that the yarn contains sufficient residual heat to be correlated with the tension therein to effect a port treatment of the yarn continuously with its initial production. As shown yarn passes through a pre-tensioner 12, guide 13 which is oscillating to prevent a groove wearing in the rollers 15, radiant heater 16, around roller 25 of false twister 21 driven for example by a belt, through rollers 26 and thence to take-up 28. The tension in the yarn on either side of the roller 25 is controlled by the rollers 15 and 26 and by whether roller 25 is positively driven or braked. The temperature of the heater 16 is maintained at a predetermined temperature dependent on the ype of yarn so that the yarn temperature is preferably within 20‹F. of, but not less that 40%- in ‹F. - below the melting point of the yarn. A suitable port treatment temperature is obtained by varying the distance between the heater 16 and roller 25 by adjusting the position of the heater on the frame 17 and perhaps by putting the roller 25 on the other end of the false twister at 24<SP>1</SP>. Alternatively the roller 25 can be replaced by a "hair pin" wire Fig. 2 (not shown) of low heat conductivity, around the bight of which the yarn is wrapped and which can project into the heater. In other embodiments the false twister comprises circular friction tube Fig. 3 (not shown); or two inclined counter rotating discs 74, Fig. 7 (not shown), having yarn engaging annuli of low heat conductivity, the discs either being geared to a belt driven spindle, or each disc having its own belt drive with the spacing between the discs being adjustable; or two parallel, counter rotating discs mounted on a non rotating spindle 83 and driven by a belt. The take up means 28 may be replaced by a ring twister take up and the radiant heater by a contact heater Fig. 4 (not shown). A tube may extend from the heater to the false twister. The yarn obtained may be plied with a similar or dissimilar yarn, the plying possibly occuring when adjacent yarns are wound on the take-up package when a ring twister is used.
Patent GB-1401245-A (GB)
Title: Over-voltage protection for electrical generators
IPC: H02H7/06
Filed: 1972-09-04
Abstract: 1401245 Protective circuits for vehicle generators TEXAS INSTRUMENTS Ltd 4 Sept 1972 40905/72 Heading H2H A circuit for protecting a vehicle generator from excessive voltage comprises a thyristor connected directly across the rectified output of the generator and a Zener diode Z for triggering the thyristor. If an excessively high voltage occurs across conductors H, E, due for example to failure of a component in a regulating circuit RC, the rise in potential at the junction of resistors R2, R3 causes breakdown of the Zener diode Z, thereby switching on transistors VT1, VT2 to supply the positive voltage at the junction of the resistors R2, R3 to the gate of the thyristor. The thyristor conducts to reduce the voltage across the conductors H, E and to reduce the energization of a field winding F of the generator. The transistors VT1, VT2 may be replaced by a thyristor.
Patent GB-866325-A (GB)
Title: Process for drying fillers of silicic acid or silicate
IPC: F26B17/10
Filed: 1958-12-18
Abstract: <PICT:0866325/III/1> Filter cakes of silicic acid or silicate fillers are dried by transforming the thixotropic cakes into pasty or fluid consistency by application of mechanical action and atomizing in a turbulent stream of hot gas at at least 200 DEG C.  The filter cake is made fluid in a kneading worm or oscillating funnel, and pumped to spray nozzles 1 or 2 of a drying chamber which widens, as shown, in the direction of gas flow.  The hot gases at 200-1000 DEG C. may enter tangentially at 3, from a combustion chamber, at at least 15 m/sec. to produce a vortex.  Alternatively a combustible, e.g. methane, CO, or hydrocarbon oil, and air may enter along the axis, or the combustible may enter axially and the air tangentially. Hot gas and dry filler are thrown out at 4 and may pass to a further drying treatment of the same type, or to separation.  The examples relate to the treatment of silica and calcium silicate filter cakes prepared from sodium silicate and acid or calcium chloride respectively.
Patent GB-1479642-A (GB)
Title: Velocity-change control system and method for numerical control machines
IPC: G05B19/25
Filed: 1974-09-19
Abstract: 1479642 Automatic movement control H CUTLER 19 Sept 1974 [27 Sept 1973] 40945/74 Heading G3N  In the control of movement in accordance with a programmed path and velocity, incremental pulses #X G  corresponding to the programmed path and velocity are passed to velocity change control system 4, see also Fig. 6, which produces therefrom command pulses #X C  corresponding to positions which lag those represented by pulses #X G  by an amount which varies in dependence on variations in the programmed path velocity, changes in lag taking place at a lesser rate than changes in velocity to smooth out the accelerations or decelerations demanded of a high gain low following error servo drive, or a stepping motor drive, receiving the pulses #X C . Sudden changes in velocity may thus be programmed, without causing overshoot of the drive. To reduce the path error resulting from use of the pulses #X C  rather than pulses #X G , each control system 4 may comprise a plurality of cascaded cells, Fig. 5 (not shown), the path accuracy, see Fig. 8 (not shown) increasing with the number n of cells, the overall velocity characteristic, represented by quantity N, being distributed; as N/n to each cell, amongst all the n cells. For straight line paths, the lag is proportional to velocity, there being no path error. The velocity response of the system to a stepwise decrease at time zero, to zero velocity is displayed in Fig. 7 (not shown). Time sharing logic can be used. Velocity change control system cell, Fig. 6. Lag register SR accumulates the difference, between input pulses #X iN  from the program or a preceding cell and output pulses #X to the drive or a succeeding cell. For each timing pulse from constant frequency generator 6, Fig. 1, the content of register SR is added to error register ER, an output pulse #X being delivered whenever the sign of the content in ER exceeds zero. ER is decremented, for each output pulse #X delivered by the amount N/n {n#1}. The velocity characteristics are altered by changing N, or altering the timing pulse frequency.
Patent GB-923370-A (GB)
Title: Improvements in or relating to a self-sealing sintering machine and sinter cooler
IPC: C22B1/20
Filed: 1960-12-01
Abstract: 923,370. Sintering-machines. KOPPERS CO. Inc. Dec. 1, 1960 [April 15, 1960], No. 41353/60. Class 82. The gravity-seating seal-bars 18 of a sintering-machine pallet are each provided, adjacent the sealing edge 31, with flanges 33, 34 which prevent the ingress of dust &c. to the seal-bar groove 17 when the pallet is inverted. The seal bars are supported by pin and slot connections 19, 21 and end caps 28 may be provided for the seal-bar grooves.
Patent GB-1275435-A (GB)
Title: Improvements in or relating to a metallurgical converter having a water cooling arrangement
IPC: C21C5/46
Filed: 1969-08-19
Abstract: 1275435 Metallurgical converters VEREINIGTE OSTERREICHISCHE EISEN UND STAHLWERKE AG 19 Aug 1969 [21 July 1969] 41423/69 Heading F4B In a tiltable converter 1 having a refractorylined steel jacket 3, 4, 5, a water cooling arrangement is provided for the frusto conically shaped upper portion 3 of the steel jacket. As shown, a cooling jacket 18, arranged around the upper part of the converter, comprises a portion 19 rigidly connected to a flange 6 at the rim of the converter, a trough-shaped part 20 welded to the jacket 4 above the carrying ring 9, and a circular pipe 21, welded between the parts 19 and 20, from which a number of tubes 22, 23, 24 (see Figs. 2-3) lead into the interspace of the cooling jacket 18. The tubes, which are all of different lengths, are provided with guide plates 25 for the water streams 31. The cooling water is  supplied into the circular pipe 21 by one or two pipe lines 27, 28, a bore 44 being provided through the carrying ring 9 and the trunnions 10, 11 for guiding the said pipes therethrough. The water running from the jacket 18 is collected at the bottom 46 of the trough-shaped part 20, passing through draining tubes 32, 33 either by gravity or by being drawn off by means of a pump. Openings 47 are provided in the part 20 for admitting air into the jacket 18 and to prevent a build-up of pressure in the interspace due to steam formation. Two further draining tubes 34, 35 are arranged in the upper part of the interspace, for drawing off the cooling water in the tilted positions of the converter (see Fig. 4). The draining tubes 32-35 are installed within the carrying ring 9 and are guided through the said bores 44 into open, coaxial tubes 29, 36, 38 and 30, 37, 39 respectively, also suitably installed in the trunnions 10, 11. A switch can be connected to the tilting drive for the converter to close and open individual valves in the drawing pipes depending on the position of the converter.
Patent GB-899008-A (GB)
Title: Improvements relating to the suspension of garden and like swing seats
IPC: A63G9/00
Filed: 1958-12-30
Abstract: 899,008. Swings. BRYANT, S., and COLLETT, E. Dec. 30, 1959 [Dec. 30, 1958], No. 41971/58. Class 132(1) [Also in Group XXV] A swing comprises a frame having two upright assemblies 10 and a top cross-bar 12 to which are attached two ball or roller bearings for the seat suspensions 13, one or other of the races of each bearing carrying a downwardly extending strap 20 which forms an eye to receive the upper end of the respective suspension. Preferably the strap is secured, e.g. by welding, to the outer race 16 and the inner race 15 is secured by means of a spindle bolt 17 to two plates 19 shaped to fit into the inverted V-shaped cross-section of the bar 12 and welded thereto.
Patent GB-419796-A (GB)
Abstract: 419,796. Fluid - actuated valves. DRAGER, B., 4, Strasse Luterana, Brasov, Roumania. June 27, 1934, No. 18947. Convention date, June 27, 1933. [Class 135.] In respiratory appliances controlled automatically by the lungs, the valve lever is articulated to the outer wall of the respiration bag in a manner permitting relative displacement of the bag and the lever. In the form shown in Fig. 1, the valve lever b is pivoted at point c and the free end is bifurcated and engages a knob e secured to the wall of the bag a. Fig. 3 shows a construction in which the bifurcated end of the lever b has two laterally outwardly bent prongs g to facilitate engagement of the knob e.
Patent GB-1510642-A (GB)
Title: High temperature secondary batteries
IPC: H01M10/39
Filed: 1974-09-28
Abstract: 1510642 Titanium disulphide NATIONAL RESEARCH DEVELOPMENT CORP 18 Sept 1975 [28 Sept 1974 22 Aug 1975] 42248/74 and 35044/75 Heading C1A [Also in Division H1] Titanium di-sulphide, for use as battery electrodes (see Division H1), is formed by mixing sponge Ti and recrystallized S, heating to 850‹C. in an evacuated quartz tube, cooling, mixing, and then reheating.
Patent GB-422979-A (GB)
Abstract: 422,979. Cables. OKONITE-CALLENDER CABLE CO., Inc., Paterson, New Jersey, U.S.A. Dec. 27, 1933, No. 36349. Convention date, Dec. 27, 1932. [Class 36] A cable comprises insulated conductors 1-3 carried within a sealed non-circular pipe 5 which contains oil 6 under pressure. The pipe is made of an elastically deformable material, such as steel, so that it does not suffer permanent distortion due to expansion of the oil filling 6. The pipe may be partly filled with sand.
Patent GB-1063712-A (GB)
Title: Rack and pinion assembly suitable for use in a mining machine
Inventor: RODFORD IVAN GEORGE
IPC: E21C31/10
Filed: 1962-11-09
Abstract: 1,063,712. Rack and pinion gearing. COAL INDUSTRY (PATENTS) Ltd. Jan. 10, 1964 [Nov. 9, 1962], No. 42428/62. Heading F2Q. [Also in Division E1] In a rack and pinion assembly for swinging a mineral cutter-carrying boom the rack is loosely coupled at each end to the piston of a single acting, piston cylinder unit associated with each end.